Print this chapterPrint this chapter

Lesson 1

1. Lesson 1

1.2. Are You Ready?

Mathematics 30-3 Module 6

Module 6: Measurement

 

Are You Ready?

 

Complete the following activity and answer the questions. If you experience difficulty and need help, work through Refresher or contact your teacher.

 

Reading a Vernier Caliper

 

This is a photograph of a vernier caliper being used to measure the length of a metal shaft.

© Kadmy/17325839/Fotolia

Recall from a previous math course that a vernier caliper is a measuring device that can be used to measure small linear distances.

 

Read the following measures and note the correct measure for each. If you have trouble reading the correct measure, skip ahead to Refresher.

  1.  

    This is an illustration of a vernier caliper displaying a measurement of 1.35 cm.

    Answer

  2. This is an illustration of a vernier caliper displaying a measurement of 1.87 cm.

    Answer

Reading a Micrometre

 

This is a photograph of a micrometre with a walnut split into two parts and another nut in the jaws of the micrometre.

iStockphoto/Thinkstock

Another measuring devise you should be familiar with is a micrometre.

 

Read the following measures and note the correct measure for each. If you have trouble reading the correct measure, skip ahead to Refresher.

  1.  

    This is an illustration of a micrometre. The thimble is just after the first tick after the 5 on the upper side of the barrel scale. The line on the barrel points between the second and third marks after 35 on the thimble. It is exactly half way between these ticks.

    Answer

  2. This is an illustration of a micrometre. The thimble is just after the third tick on the lower scale after the 0 on the barrel scale. The line on the barrel points between the second and third marks after 45 on the thimble. It is exactly half way between these ticks.

    Answer

If you answered the Are You Ready? questions without difficulty, move to Discover.

 

If you found the Are You Ready? questions difficult, complete Refresher.